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Occurs in Pinal County. Common in Arizona.

Chemical Formula: CuFeS2

Specific Gravity: 4.1-4.3

Luster: Metallic

Hardness: 3.5-4

Chalcopyrite is a common copper iron sulfide mineral that is the primary ore of copper. It has a brassy yellow color and often exhibits a distinctive iridescence known as “peacock ore.”

Chalcopyrite is the most common copper mineral found in copper deposits worldwide, including those in Arizona.

Chalcopyrite is the primary copper ore mineral in many Arizona copper mines, and its presence can define the economic viability of a copper deposit. It is often associated with other sulfide minerals, such as pyrite and bornite, as well as oxide minerals like malachite and azurite.

Next Pinal County mineral: Chamosite